3 nights in a cave - with some color (Stefano Ciapetti)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: Sh2-155

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3 nights in a cave - with some color

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3 nights in a cave - with some color

This image of the cave is the monochrome image:

https://astrob.in/e02ltn/0/

combined with 9 hours and 30 minutes (285 120 secs unguided subs) of color image taken with a modded 600d, an Acuter ed90 f6.7 and an Astromonik cls ccd filter. All on top of the Newton and the Ioptron cem60 that was taking the mono image. Original color image was very noisy due to the extreme hot of these nights. My processing has been done fully in PS.

Sh2-155 (also designated Sharpless 155 or S155) is a diffuse nebula in the constellation Cepheus, within a larger nebula complex containing emission, reflection, and dark nebulosity. It is widely known as the Cave Nebula, though that name was applied earlier to Ced 201, a different nebula in Cepheus. Sh2-155 is an ionized H II region with ongoing star formation activity, at an estimated distance of 725 parsecs (2400 light-years) from Earth (Wikipedia)

Thanks for looking

Imagers of Italy
Suburban Astrophotography
Low-Cost Astrophotography
Short exposures DSO
ZWO ASI183/QHY183
Fast Newtonians

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Status	Advanced success
Started	...
Astrometry.net job	3776271
PixInsight job	3PYQXK871XUEUNPKHBBP5ZMSTIA52FA7
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	22h56m58s.656
RA (top/left)	22h53m45s.910
RA (top/right)	22h58m33s.600
RA (bottom/right)	23h00m12s.575
RA (bottom/left)	22h55m27s.780

Dec (center)	+62°29′28″.11
Dec (top/left)	+62°32′01″.16
Dec (top/right)	+62°49′13″.67
Dec (bottom/right)	+62°26′34″.73
Dec (bottom/left)	+62°09′34″.92

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3 nights in a cave - with some color

3 nights in a cave - with some color

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3 nights in a cave - with some color

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